What are two services provided through Committed Access Rate (CAR)? (Choose two)
A.
Policing
B.
Classification
C.
Link efficiency
D.
Traffic shaping
E.
Congestion avoidance
Explanation:
CAR provides policing functions and marking.
Policing, in its most basic form, discards traffic that exceeds a particular traffic contact. The contact has two components: a rate, stated either in bits per second or bytes per second; and a butst size, statted in either bits or bytes. The traffic conforms to the contract if it sends at the rate, or bellow, and it does not send a burst of traffic greater than the burst size. If the traffic exceeds the traffic rate over time, or exceeds the single burst size limit, the policing function drops the traffic in excess of the rate and the burst size. Therefore, the simplest form of policing has two rigid actions: eigher to forward packets or to drop them.
Reference: DQOS Exam Certification Guide p.194.